Automatic cylinder ring



Feb. 12 1924. 1,483,352

" E. KIEFER AUTOMATIC CYLINDER RING Filed May 19 1922 T A 2! KY ii E-EQf? ATTORNEY WITNESS:

Patented Feb. 12, 1924.

EDWARD KIEEER, 01's FALLS CITY, NEBRASKA.

AUTOMATIC cYLiNDEa RING.

Application filed ma 19, 1922. Serial 1110. 562,157.

To all whom z't-may concern; Be it known that I, EDWARDKIEFER, a citi- I zen of the Unit 11 States, residing'at Falls.

City, in the coun y of Richardson and State bearing face 13 so as to be slightly spaced from the inner wall of the cylinder. Extending upwardly from the outer periphery of the flange 16 is an inwardly inclined wall of Nebraska, have invented new and useful which co-operates with the adjacent lower Improvements in Automatic Cylinder Rings, of which the following is a specification.-

This invention relates to cylinder packing rings adapted for use in internal combustion or other engines.

An object of the present invention is the provision of a piston packing ring which cooperates with the piston to provide'an expansion channel, whereby the bearing surface of the ring will be forced by expansion against the wall of the cylinder to prevent leakage of the gases, the ring further including a piston overlapping flange and an oil groove, whereby oil is irected against the cylinder wall to provide proper lubrication, ai-d into the chamber.

With the above and other objects in view,

- the invention further includes the followtransverse ing novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is an elevation of a piston acking ring constructed in accordance wit the invention.

Figure-2 is an enlarged fragmentary sectional view illustrating the position of the ring with respect tov the piston and engine cylinder.

Referring in detail to the drawings, wherein like'characters of reference denote corresponding parts, the rin is shown as be ng y split as s own at 10, being transverselv shaped -to provide a substantially rectangular body portion 11 from -which extends a substantially triangular flange 12. Thisflange extends around the circumference of the ring and includes a substantially flat bearing face 13 and an up er downwardly and inwardly inclined face 14,'the latter (so-operating with the ad- 'acent outer wall of the piston to provide a substantially wedge-shaped expansion channel- 15.

Extending downwardly end of the bedv portion of the ring is a circumferential flange 16 which overlaps the adjacent portion of the piston and whose outer periphery is within the plane of the from" the lower cylinder wil v1 7all of the flange 12 to provide an oil groove 1 In the drawings, a fragmentary portion of the cylinder is shown at 19, while a portion of the piston is shown at 20 and when the ring is in position, the body portion will be received within the usual ring groove 21. The face 13 of the flange 12 will work against the inner wall of the cylinder 19 and when an. expansion occurs, the expanding gases will fill the expansion channel 15 and expand the ring so as to provide a leak proof joint between the beai'in face 13 and the wall of the cylinder. 11 the downward stroke of the piston, oil from the walls of the groove 17 and upon the return stroke will be fed to the cylinder wall so. as to keep'the same properly lubricated.

By the use ofthe rings above described, the cylinder of an engine may be kept'in a perfectly round condition and if the rings are used within a cylinder which has been worn oval, the pressure of the rings will bear against that portion of the c linder having the smallest diameter and will exert wear sufficiently to bring the cylinder into proper rounded shape.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended be gathered within the oil versely split. member of substantially rectangiilar cross sectional shape, a substantially triangular circumferential flange ex tending around the outside .of said member and providing an outer flatbearing face and an inner and upper downwardly and iiiwardly inclined face spaced from the face of the piston and co-operating with the latter to provide a cross sectional wedge-shaped expansion channel and a lower inwardly and upwardly inclinedface extending from the outer edge of thering. I

2. A'piston ring cof prisin atransversely split member of substantiaily rectangular cross sectional shape, a substantially triangular circumferential flange extending around the outside of said member and pro viding an outer fiat bearing face and an in- 65 ner and upper downwardly and inwardly 2e cross sectional wedge-shaped flange extend- I ineaaae ing from the lower edge of the ring, the outer periphery of the flange being within the plane of the bearing face and an inclined wall connecting-said outerperiphery with the triangular flange, said wall being spaced from the lower inner wall of the said triangular flange and defining an oil groove.

In testimony whereofl aflix my signature.

ED. KIEFER. 

